[ treatment of urinary stones by extracorporeal shock wave lithotripsy]

ABSTRACT

Until the beginning of the eighties, the surgery was the only way to extract calculi localized in the kidney or the ureter. The extra-corporeal lithotripsy, who allow fragmentation of calculi by shock waves, was the most important discover. Nowadays it is the most useful method for the treatment of calculi. This field knows an important development with the appearance of new machines more and more performant. The objective of this study is to evaluate the clinical results after one year's experience with a new generation lithotriptor the lithostar multiline tm [siemens]. The authors treated 147 patients ages between the ages of 8 and 73 years, presenting with renal stones in 67.23% of cases,ureteral stones in 31,07% of cases and bladder stones in 1,69% in cases.The mean stone diameter was 14mm [3-34mm]. An average of 3846 [range 1500-6000] shock waves were applied with a mean energy level of 4.29 [range 1.5-7]. The success rate was 62% for the renal stones,82% for lumbar ureter and 60,7% for the pelvic stones.the morbidity was low [10% of renal colic, 5% of obstructive stone and 1.4% of pyelonephritis]. The [siemens] multiline tm lithostar is a new generation lithotriptor, efficient and with a low morbidity.These data indicates the limits of the efficacy nature of a modem lithotriptor for the pelvic stones